%0 Journal Article %A Robert Wilder %T A Labor of Joy %B Creating the WilderHill Clean Energy Index %D 2005 %J ETFs and Indexing %P 75-78 %V 2005 %N 1 %X ETFs are an index-based product. One of the challenges in establishing an ETF is the creation and maintenance of the index. This case study of the WilderHill Clean Energy Index gives some insight into some of the issues that are faced when creating such an index. %U https://guides.pm-research.com/content/iijetfind/2005/1/75.full.pdf